CN205676028U - A kind of distributed large-sized gantry crane weighing system based on DP bus - Google Patents
A kind of distributed large-sized gantry crane weighing system based on DP bus Download PDFInfo
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- CN205676028U CN205676028U CN201620609194.XU CN201620609194U CN205676028U CN 205676028 U CN205676028 U CN 205676028U CN 201620609194 U CN201620609194 U CN 201620609194U CN 205676028 U CN205676028 U CN 205676028U
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Abstract
The utility model discloses a kind of distributed large-sized gantry crane weighing system based on DP bus, it is characterized in that array weighing unit is connected with each corresponding PLC substation by output switch parameter and DP bus respectively, each PLC substation is connected with PLC master station by DP bus, PLC master station is connected with industrial computer by Ethernet, industrial computer is connected weight display by cable, described each group of weighing unit is made up of with several suspension hook LOAD CELLSs and signal transmitting device weighing instrument main frame, each suspension hook LOAD CELLS is used analogue signal to be connected with weighing instrument main frame by each corresponding signal transmitting device, each weighing instrument main frame is respectively adopted output switch parameter and DP bus and connects with each corresponding PLC substation.This utility model compared with prior art has data transmission reliably, and electromagnetism interference is good, and signal transmission is undistorted, safety supervision system can directly gather the weighing system data once converting digital signal, system extension is convenient, only need to be by the most configurable to new equipment access network, easy configuration.
Description
Technical field
This utility model relates to crane peace keyholed back plate reason technical field, a kind of based on DP bus distributed large-scale
Gantry crane weighing system.
Background technology
Along with the development of national economy, large-sized gantry crane is widely used in shipyard and each heavy industry field, country
The departments such as handling machinery Quality Supervision and Inspection Center put into effect " GB/T28264-2012 " hoisting machinery security monitoring pipe in recent years
Reason system " " national regulation in require that crane is weighed at large and medium-sized hoisting machinery popularization and application security monitoring management system
Safeguard protection that system must configure as crane and supervising device, and the weighing data of crane, as safety supervision system
Important parameter, can improve crane safety, conveniently review device history duty, meets the requirement analyzing fault.Large-scale
Gantry crane weighing system is typically by groups such as weighing instrument main frame, suspension hook LOAD CELLS, signal transmitting device, communication cables
Becoming, weighing instrument main frame is positioned at crane cabin, and suspension hook LOAD CELLS, signal transmitting device are positioned at upper and lower dolly.Lifting
Each suspension hook on machine all configures LOAD CELLS, the suspension hook dynamometry position that LOAD CELLS is arranged in upper and lower dolly, weighs
The signal of sensor output is generally voltage and accesses its neighbouring signal transmitting device, signal transmitting device by weight signal by long away from
From communication cable input weighing instrument main frame, main frame instrument output switch amount signal and 4 ~ 20mA analog quantity or RS485 bus, this
A little signals input crane mainframe PLC, main frame instrument arrangement is weighed the information such as display screen, display lifting capacity data.
Prior art also exists long range propagation analogue signal distortion and the problem of modulus signal conversion, and large-sized gantry rises
Heavy-duty machine girder span is 100m ~ 200m, because space is laid and stretched in the movement of cable, upper and lower dolly communication cable is all higher than
Its stroke.According to suspended cables mode, girder span is the simulation that the crane of 100m ~ 200m needs 150m ~ 300m length
Amount communication cable.And the output signal of LOAD CELLS (transmitter) is transmitted to weighing instrument main frame with analog quantity, in distance
Analog quantity transmission in, owing to electromagnetic interference easily causes the distortion distortion of analogue signal, because the power cable of converter is also
In adjacent drag chain or suspended cables, and other electromagnetic interference source, cause the distortion of weighing-up wave.It directly affects and has been
Weight display mistake and protection false alarm of weighing.GB/T 28264-2012 requires that crane is equipped with at signal gathering unit, signal
The hardware facilities such as reason unit, wherein information acquisition unit is used for reading information source data.Safety supervision system needs to gather weighing data,
Being gathered by weighing instrument, interface is usually 4 ~ 20mA analog quantity or RS485 bus.If signals collecting selects analog quantity mode,
Then there is modulus-digital-to-analogue multiple conversions, signal accuracy reduces.It is digital instrumentation, if weighing-up wave passes through at present in industry
Analog quantity is transmitted, then there is the situation of digital-to-analogue two times transfer.First, sensor original analog carries out numeral in gauge internal
Changing, then digital signal transfers analog signals to, is transferred to PLC by analog quantity interface, and analogue signal is translated into by PLC
Digital data transmission is to safety supervision system.Modulus-digital-to-analogue multiple conversions in the process, its signal accuracy necessarily reduces.And connect
The costs such as mouth die block cost is high, PLC analog module, RS485 module are above common analog I/O module.Configuration autgmentability
Difference, if desired changes weighing system, uses RS485 communication, then needs to reset master-salve station.
Utility model content
The purpose of this utility model be design for the deficiencies in the prior art a kind of based on DP bus distributed greatly
Type gantry crane weighing system, uses modularized design and the digital data transmission of packet configuration, is incorporated into by weighing system
The electrical system of crane mainframe, array weighing unit is connected, respectively with each PLC substation by output switch parameter and DP bus respectively
PLC substation is connected PLC master station by DP bus, and signal transmission is undistorted, and electromagnetism interference, safety supervision system can directly gather and once turn
Change the weighing system data of digital signal, and crane mainframe PLC be without increasing communication interface conversion module or analog module,
There is acquisition initial data precision height and system extends convenient advantage, only need to be by new equipment access network, easy configuration
Configuration, provides important leverage for large-sized gantry crane safety.
The purpose of this utility model is achieved in that a kind of distributed large-sized gantry crane based on DP bus claims
Weight system, including array weighing unit, each PLC substation and PLC master station, industrial computer and weight display, is characterized in array
Weighing unit is connected with each corresponding PLC substation by output switch parameter and DP bus respectively, and each PLC substation is by DP bus and PLC
Main website connects, and PLC master station is connected with industrial computer by Ethernet, and industrial computer is connected weight display by cable, and described each group claims
Weight unit be made up of with several suspension hook LOAD CELLSs and signal transmitting device weighing instrument main frame, each suspension hook LOAD CELLS by
Each corresponding signal transmitting device uses analogue signal to be connected with weighing instrument main frame, and each weighing instrument main frame is respectively adopted switching value
Output and DP bus connect with each corresponding PLC substation.
Described each PLC substation configuration DP interface
Described each PLC master station configuration ethernet interface module.
This utility model compared with prior art has weighing system and is incorporated into crane mainframe electrical system, and signal transmits
Undistorted, anti-interference, without distance analog signals transmission link, overall situation digital data transmission, safety supervision system can directly gather
Once convert the weighing system data of digital signal, the data of original precision can be obtained, and crane mainframe PLC is without increasing
Communication interface conversion module or analog module, system extension is convenient, only new equipment access network, easy configuration need to be got final product group
State, system run all right, data transmission is reliable, and engineering cost is low, easy to maintenance, provides weight for large-sized gantry crane safety
Ensure.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is weighing unit structural representation.
Detailed description of the invention
Refering to accompanying drawing 1, this utility model is by array weighing unit 1, each PLC substation 2 and PLC master station 3, industrial computer 4 and
Weight display 5 forms, and described array weighing unit 1 is connected with each corresponding PLC substation 2 by output switch parameter and DP bus respectively
Connecing, each PLC substation 2 is connected with PLC master station 3 by DP bus, and PLC master station 3 is connected with industrial computer 4 by Ethernet, and industrial computer 4 is by cable
Line connects weight display 5；Described each PLC substation 2 configures DP interface；Described each PLC master station 3 configuration ethernet interface module.
Refering to accompanying drawing 2, described each group of weighing unit 1 is by weighing instrument main frame 11 and several suspension hook LOAD CELLSs 13
Forming with signal transmitting device 12, each suspension hook LOAD CELLS 13 is used analogue signal by each corresponding signal transmitting device 12 and is weighed
Instrument main frame 11 connects, and each weighing instrument main frame 11 is respectively adopted output switch parameter and DP bus with each corresponding PLC substation 2 even
Connect；Described PLC substation 2 configures DP interface, such as the IM153-2 module of the ET200M series of Siemens.
In this utility model distribution based on DP bus uses packet configuration, modularized design, dolly (upper dolly or
Dolly under person) configure one group of weighing unit 1, complete machine comes configuration packet quantity, complete machine configuration 2 ~ 3 according to the dolly quantity of crane
The weighing unit 1 of group, all uses DP field bus communication between weighing unit 1 and PLC master station 3.Weighing instrument main frame 11 with
Several suspension hook LOAD CELLSs 13 and signal transmitting device 12 are all positioned at dolly, and weighing instrument main frame 11 is installed on dolly
On interior long-distance control cabinet, its output DP bus signals and on-off model, lifting in these long-range control chambers of signal input trolley
The PLC substation 2 of machine host, the suspension hook dynamometry position that suspension hook LOAD CELLS 13 is arranged in dolly, suspension hook LOAD CELLS 13
The signal (generally voltage) of output accesses each corresponding signal transmitting device 12 near it, and weight signal is led to by signal transmitting device 12
Cross communication cable input weighing instrument main frame 11.Because single weighing unit 1 of group and the PLC substation 2 of crane mainframe are respectively positioned on
Car interior, single channel cable length is respectively less than 20m.Wherein, the DP electricity of the PLC substation 2 of single group weighing unit 1 and crane mainframe
Cable length is less than 3m, the analog quantity transmission electricity between weighing instrument main frame 11, suspension hook LOAD CELLS 13, signal transmitting device 12 are each
Cable length is less than 15m.
This utility model is integrated into crane mainframe electrical system, wherein PLC substation 2, PLC master by electrical system integrator
Stand 3 and industrial computer 4 be crane electrical system standard configuration, weight display 5 can aobvious with crane management information system
Show that device shares.PLC master station 3, industrial computer 4 and weight display 5 are arranged on drivers' cab.Owing to the weight of weighing unit 1 exports letter
Number it is directly entered the PLC substation 2 in the long-range control chamber of dolly, is connected by optical fiber between PLC master station 3 and each PLC substation 2, because of
The entrance crane electric control system of this these signal lossless consumption.In complete machine weighing system, the weighing unit 1 of each single group can be adopted
Collecting single hook weighing data of suspension hook in this dolly, these data input PLC master station 3, PLC master station 3 is to the weighing unit 1 of each group
Data carry out comprehensive computing, can obtain crane machine complete machine weighing data, and weight data is transmitted to industrial computer by PLC master station 3
4, the weight display 5 being arranged on drivers' cab can show single hook gravimetric value and the gravimetric value etc. of complete machine, and safety supervision system simultaneously can
From industrial computer, directly gather weighing system data.Each PLC substation 2 and PLC master due to weighing unit 1 and crane mainframe
Stand and between 3, all use DP field bus communication, the weighing unit 1 that in complete machine weighing system, each list is organized to be independent DP and divide
Standing, system carries out software design patterns according to the communication of standard DP.
More than simply this utility model is further described, and is not used to limit this patent, all for this utility model
Equivalence is implemented, within being intended to be limited solely by the right of this patent.
Claims (3)
1. a distributed large-sized gantry crane weighing system based on DP bus, including array weighing unit (1), each PLC
Substation (2) and PLC master station (3), industrial computer (4) and weight display (5), it is characterised in that array weighing unit (1) is respectively
Being connected with each corresponding PLC substation (2) by output switch parameter and DP bus, each PLC substation (2) is by DP bus and PLC master station (3)
Connecting, PLC master station (3) is connected with industrial computer (4) by Ethernet, and industrial computer (4) is connected weight display (5) by cable, described
Each group of weighing unit (1) is by weighing instrument main frame (11) and several suspension hook LOAD CELLSs (13) and signal transmitting device (12)
Composition, each suspension hook LOAD CELLS (13) is used analogue signal and weighing instrument main frame by each corresponding signal transmitting device (12)
(11) connecting, each weighing instrument main frame (11) is respectively adopted output switch parameter and DP bus with each corresponding PLC substation (2) even
Connect.
Distributed large-sized gantry crane weighing system based on DP bus the most according to claim 1, it is characterised in that institute
State each PLC substation (2) configuration DP interface.
Distributed large-sized gantry crane weighing system based on DP bus the most according to claim 1, it is characterised in that each
PLC master station (3) configuration ethernet interface module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620609194.XU CN205676028U (en) | 2016-06-21 | 2016-06-21 | A kind of distributed large-sized gantry crane weighing system based on DP bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620609194.XU CN205676028U (en) | 2016-06-21 | 2016-06-21 | A kind of distributed large-sized gantry crane weighing system based on DP bus |
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| CN205676028U true CN205676028U (en) | 2016-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883621A (en) * | 2016-06-21 | 2016-08-24 | 中船第九设计研究院工程有限公司 | Distributed weighing system on basis of DP bus for large gantry cranes |
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2016
- 2016-06-21 CN CN201620609194.XU patent/CN205676028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883621A (en) * | 2016-06-21 | 2016-08-24 | 中船第九设计研究院工程有限公司 | Distributed weighing system on basis of DP bus for large gantry cranes |
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